Local knowledge is essential in a neon jungle like Hong Kong. Restaurateur, architect and Hong Kong resident Frank Sun recommends starting with a drink at the historic Mandarin Oriental hotel, followed by a walk to Sheung Wan--a "very different side of old Hong Kong and one that is rapidly disappearing." Satisfy your appetite at the Tung Po seafood restaurant in North Point, above the market at 99 Java Road, a 20-minute tram ride away. Once you're stuffed, Sun says, a cab is the quickest way to the funkiest bar in town, Feather Boa....